#include fread(ptr, size, count, iop) unsigned size, count; register char *ptr; register FILE *iop; { register c; unsigned ndone, s; ndone = 0; if (size) for (; ndone= 0) *ptr++ = c; else return(ndone); } while (--s); } return(ndone); } fwrite(ptr, size, count, iop) unsigned size, count; register char *ptr; register FILE *iop; { register unsigned s; unsigned ndone; ndone = 0; if (size) for (; ndone